Q1: How much power does the serial flash require?
A1: The SST25VF020 flash on the ES449 requires up to 30mA during writes. The AAA and coin cell supplies on the ES449 are intended to demonstrate the snooze mode of these highly efficient supplies. For serial flash experiments, use the lab supply, and field your product with a higher-power supply.

Q2: Is there any way to remove AQ430-449 (ES449Q Kit) from one computer and use it on another?
A2: Our policy is the same for AQ430-449 as for AQ430: we allow the user to install the software on up to 3 PCs, as long as it is not in use on more than one PC at a time. However, the user must ask us for another response string for every new installation. We use the registration string to count the responses we sent for a given license.

Q3: I want to use a different lab voltage than the 3.0v on the board. What do I do?
A3: We've used the TPS7201 to allow changing the lab power voltage by only changing one resistor, R27. Refer to the TPS7201 documentation for more details. For your convenience, we've listed a few key values below:

Voltage

Resistor

Actual VCC

2.7v

215k 1%

2.70v

3.0v

261k 1%

3.02v

3.3v

301k 1%

3.30v

3.6v

342k 1%

3.59v

Q4: OK, I've got the documentation, but still have trouble mapping segments to code. Help?
A4: No problem, this can get a bit fuzzy.

Imagine you want to make a '3' appear in the right-most digit (digit 7, see SBLCDA2 spec page 4). This would require the illumination of segments A, B, C, D, G, and M (see page 4). This means that 7A, 7B, 7C, 7D, 7G, and 7M must have 1s in the segment registers, and all other 7x segments must be a zero.

On the ES449, these segments are provided at pins 23 through 26 (page 5). Per page 6, and the ES449 schematic, pins 23 through 26 are connected to segment lines S12 through S15, in reverse order.

Now, flip your brain inside out once more. The following means that S12 through S15 have to get the following bit pattern:

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